Tractor



Feb. 28, 1928.

J. BARTNICKI TRACTOR' Filed Feb. s. 192e' 5 Sheets-Sheet 1 Feb. 28, 1928. 1,661,105

J. BARTNICKI TRACTOR Filed Feb, 9. 1926 5 Sheets-Sheet 2 J. rimkm.'

Feb. 28, 1928.

J. BARTNICKI TRACTOR Filed Feb. 9. 192e 5 sheds-sheet 3 J. ,hf-imm.

J. BARTNICKI TRACTOR Filed Feb. 9. 1926 5 Sheets-Sheet 5 u: Ill Q DUBBIJDGDQHUD Q r 5 f h gg 2 l; *s

@f 'lfb o o r o si m o i n 19 N E s Q Dunnuusur qqunu s Y@ LQ o n N o l sx di YTQ m G w w m "1 v N $2 og o i o @j M 'l1 E@ n N b the members 55 and 56 are disengaged. Journaled on the sleeve 58 is a sprocket 62 which is rigid with clutch member 59 and connected by a chain 63 with a sprocket 64 mounted on one section of a differential shaft 65, whose sections are connected by an ordinary differential 66. Each outer end of the shaft 65 carries a sprocket 67 which is connected by a chain 68 to the sprocket wheels 69 mounted on the drive shaft 17. One of the sprockets 69 is fixed to the drive shaft and the respective ground wheel 19. The other sprocket 69 is fixed to the remaining ground wheel 19 but revolves with said wheel on the shaft 17. The last mentioned sprocket carries a clutch member 70 which is cngageable by the clutch member operated by a lever 7 2. 0n the shaft 30 is a belt pulley 73.

In operation, it will be seen that with the engine running the shaft 30 may be driven by moving the rod 47 in one direction, the sprocket (i2 being idle. Thus farm machinery can be driven by the belt pulley 73. Upon moving the rod i7 to engage the clutch members 59 and 60 the shaft 65 will be driven and with clutch element 71 disengaged this will give a differential drive of the ground wheels 19. Thus the tractor moves from place to place and may be guided by suitable steering means as indicated at 7 3, the wheels 19 moving independently by reason of the differential 66. However, in the event of tractor getting in such ground that one ground wheel slips the clutch element 7l is engaged with clutch ele ment 70, and the rearaX'le 17 is driven so that the two ground wheels operate together thus pulling the tractor out of its bad position.

There has thus been provided a simple and efficient deviceof the kind described andvfor the purpose specified.

ft is obvious that minor changes may be made in the form and construction' of the invention without departing from the mate" rial spirit thereof. It is not, therefore, desired to conne the invention to the exact form herein shown and described, but it is desired to include all such as properly come within the scope claimed.

Having thus described the invention, what is claimed as new, is:

1. In a tractor, a frame having a rear drivers seat and provided with pairs of front steering and supporting wheels and independently rotatable rear driving and sup-v porting wheels, a. horizontal engine mounted upon the rear end portion of the frame and having a transverse drive shaft at its forward end, a transverse counter shaft journaled on the frame forwardly of and beiow said-drive shaft, manually releasable driving connections between said drive sha-ft and said counter shaft, a sectional transverse shaft journaled on the frame below the drive shaft and between the counter shaft and the aXle of the rear wheels, a differential gearing between the sections of .said sectional shaft, driving -connections between said counter sha-ft and one section of said sectional shaft, and constant driving connections between `thesections of said sectional shaft and therespectiverear driving and supporting wheels.

2. In a tractor, a frame having a rear drivers seat and provided with pairs'of front steering and supporting wheels and independently rotatable rear driving and supporting wheels, a horizontal engine mounted upon the rear end portion of the frame and having a transverse drive shaft at its forward end, a transverse counter shaft journaled on the frame forwardly of and below said drive shaft, manually releasable driving connections between said drive shaft and said counter shaft, a sectional trairsverse shaft journaled on the frame beiow the drive shaft and between the counter shaft and the axle ofthe rear wheels, a differential gearing between the sections of said sectional shaft, driving connections between said counter shaft and oneV section of said sectional shaft, constant driving connections between the sections of said sectional yshaft and the respective rear driving and supporting wheels, said first named counter shaft being hollow, a second transverse counter shaft upon which said first named counter shaft is journaled, manually operable means to connect said drive shaft to said second counter shaft and simultaneously disconnect said drive shaft from said first named counter shaft or vice versa, and means to facilitate transmission Vof power from said second counter shaft to other machinery.

3. in a tractor, a frame having a rear driver7s seat and provided with pairs of front steering and supporting wheels and independently rotatable rear driving and supporting wheels, a horizontal, engineV mounted upon the rear. end portion of the frame andY having a transverse drive shaft at its forward end, a transverse counter shaft journaled on the frame forwardly of and below said drive shaft, manually ree leasable driving connections between said drive shaft and said counter shaft, a sectional transverse shaft journaled on the framek below the drive shaft and between the counter shaft and the axle of the rear wheels, a differential gearing between the sections of said sectional shaft, driving connections between said counter shaft and'one section of said sectional shaft, constant driv- Y ing connections between the sections of said sectional shaft and the respective rea-rV driving and supporting wheels, said first named counter sha-ft being hollow, a second transverse counter shaft upon which said first named counter shaft is journaled, manually operable means to connect said drive shaft to said second counter shaft and simultaneously disconnect said drive shaft from said first named counter shaft or vice versa, and means to facilitate transmission of power from said second counter shaft to other machinery, said last named manually operable means embodying a wheel rigid with the hollow counter shaft and geared to the drive shaft, a second .wheel journaled on the hollow counter shaft and geared tothe section of the sectional shaft, a clutch to connect the first wheel to the second counter shaft, a clutch to connect the hollow counter shaft to the second wheel, and means to simultaneously release either clutch and engage the other.

4. In a tractor, a frame having a rear drivers seat and provided with pairs of front steering and supporting wheels and independently `rotatable rear driving and supporting wheels, a horizontal engine mounted upon the rear end portion of the frame and having a transverse drive shaft at its forward end, a transverse counter shaft journaled on the frame forwardly of and below said drive shaft, manually releasable driving connections between said drive shaft and said counter shaft, a sectional transverse shaft journaled on the frame below the drive shaft and between the counter shaft and the axle of the rear wheels, a differential gearing between the sections of said sectional shaft, driving connections between said counter shaft and one section of said sectional shaft, and constant driving connections between the sections of said sectional shaft and the respective rear driving and supporting wheels, a rotatable rear axle having one of said rear driving and supporting wheels fixed thereon and the other journaled thereon, and manually operable means to clutch said other wheel to or disconnect the same from said rear axle, at will.

In testimony whereof I atlix my signature.

JOHN BARTNICKI. 

